[TRNSYS-users] airnode regime data: capacitance

David BRADLEY d.bradley at tess-inc.com
Mon May 16 10:24:54 PDT 2022


You can set the value to whatever you like; the field is in the 
information window for each airnode of the building in TRNBuild. The 
default value (1.2* volume) accounts only for the thermal capacitance of 
the air in the airnode. Typically the default value is multiplied by 
some factor between 5 and 10 to account for the thermal capacitance of 
all the furnishings in the zone.

kind regards,

  David


On 05/16/2022 03:39, Huijie Pu via TRNSYS-users wrote:
>     Hello!
>     In the 05-MultizoneBuilding document, The capacitance will be 
> automatically set to a default value of 1.2*volume. Can the 
> capacitance value be changed to 0.5*volume or 0.8*volume?
>
>
>
>
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-- 
***************************
David BRADLEY
Principal
Thermal Energy System Specialists, LLC
3 North Pinckney Street - suite 202
Madison, WI  53703 USA

P:+1.608.274.2577
d.bradley at tess-inc.com

http://www.tess-inc.com
http://www.trnsys.com
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